Rectal insert



FIG. 1 is a top perspective view of an ornamental design for a rectal insert;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevation view thereof, the rear elevation view, the right side elevation view, and the left side elevation view being mirror images;

FIG. 4 is a top perspective sectional view thereof, taken along a section line A-A in FIG. 3;

FIG. 5 is a front elevation sectional view thereof, taken along a section line A-A in FIG. 3;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof. 

CLAIM The ornamental design for a rectal insert, as shown and described. 